> dmoz.org has identifiers for movies, and so does tap.stanford.edu. For examp
> le,
> dmoz.org uses "Top/Arts/Movies/Titles/M/Matrix_Series/Matrix,_The"
> and tap.stanford.edu uses "http://tap.stanford.edu/data/MovieMatrix"
> and there may be others.
>
> I don't see any of these sites using triples that say one is owl:sameAs the
> other.
>
> Who is actually supposed to be responsible for sameAs assertions? dmoz.org?
> TAP? Or some third party?
No one is responsible, but lots will benefit if each side does it, and
maybe some others, too.
> Is this in practice a showstopper for useful semantic web searches?
> (This may be FAQ but I couldn't find it.)
The flip side is that you CAN say owl:sameAs on the Semantic Web.
-- sandro